Identification of a Sleep Bruxism Subgroup with a Higher Risk of Pain

  1. P.H. Rompré1
  2. D. Daigle-Landry1
  3. F. Guitard1
  4. J.Y. Montplaisir2
  5. G.J. Lavigne1,2,*
  1. 1Faculty of Dental Medicine, Université de Montréal, C.P. 6128, succ. Centre-Ville, Montréal, Canada, H3C 3J7; and
  2. 2Centre d’étude du sommeil et des rythmes biologiques, Hôpital du Sacré-Coeur, Canada


Sleep research diagnostic criteria (SB-RDC) have been applied since 1996. This study was performed to validate these criteria and to challenge the hypothesis that pain is associated with lower frequencies of orofacial activities. Polygraphic recordings were made of 100 individuals presenting with a clinical diagnosis of sleep and 43 control individuals. TwoStep Cluster analyses (SPSS) were performed with sleep variables to reveal groupings among sleep bruxers and control individuals. Participants completed questionnaires during screening, diagnosis, and recording sessions. Cluster analysis identified three subgroups of sleep bruxers. Interestingly, 45 of the 46 sleep bruxers with values below SB-RDC were classified in the low-frequency cluster. These individuals were more likely to complain of pain and fatigue of masticatory muscles than were the higher-frequency sleep bruxers (odds ratios > 3.9, p < 0.01). Sleep bruxers were distributed among three heterogeneous groups. Sleep bruxers with low frequencies of orofacial activities were more at risk of reporting pain.

J DENT RES 2007 86: 837

Bradley Eli DMD, MS

Bradley Eli DMD, MS

Dr. Brad Eli is a nationally-recognized leader in sleep disorders treatment and pain management. His expertise in sleep led him to develop a patient-centered method that offers a variety of sleep treatment options and matches each patient with the best treatment for their symptoms and lifestyle. Patients diagnosed and treated by Dr. Eli consistently achieve better compliance rates and improved outcomes. Dr. Eli is the first Medicare and Tricare approved provider for multi therapy sleep treatment in Southern California. Dr. Eli earned a post doctoral Master’s Degree at UCLA where he received advanced training in sleep disorders. He remains the only expert with this unique skill set in the San Diego region. Dr. Eli is on the hospital staff at Scripps Memorial Hospital La Jolla and UCSD. He is a member of numerous professional associations including the American Academy of Sleep Medicine and the American Academy of Dental Sleep Medicine. Dr Eli holds multiple patents in the fields of both sleep and pain.

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